Permutation-padlock.



P. E. BENNETT.

PBRMUTATION PADLOGK.

Arluouron FILED JAN.20,1910.

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Patented Deo. 2o, 1910.

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FRED E. BENNETT, OF LOS ANGELES, CALIFORNIA, ASSIGNOR, BY DIRECT AND MESNEr l ASSIGNMENTS, TO PHOENIX COMBINATION LOCK COMPANY, OF PHOENIX, ARIZONA TERRITORY, A CORPORATION OF ARIZONA TERRITORY.

PERMUTATION-PADLOCK.

Specification of Letters Patent.

ratenteanec. 2o, 1910.

Application filed January 20, 1910. Serial No. 539,036.

, picking.

The features of construction embody a means to prevent the bolt from coming into contact with any but the locking disk or member which must be the last moved into place to release the bolt. This is accomplished in the present form by making one of the disks larger than the remainder. In the showing, there are only two locking disks shown, but the number may be increased as desired.

Another feature of the construction is the beveling of the bolt and of the notch in the shackle so that the shackle must be pulled out in order to force the bolt into the notches in the locking disks. By this means it is provided that it is impossible to find the notches in the locking disks by the passage of those notches under the bolt.

Another feature resides in the relative placement of the disks and bolt. This is so designed that, if the bolt is pulled out of place by an outward pull on the shackle, the bolt will be pulled more tightly against the locking disks. There is alsoibrovided a spring or other means for holding the bolt normally against the shackle and away from the disks; this also provides that the notches in the disks cannot be found by contact with the bolt.

In the accompanying drawings: Figure l is a side elevation of my improved lock. Fig. 2 is a sectional view taken on line 2 2 of Fig. 3. Fig. 3 isa sectional view taken on line 3 3 of Fig. 2.

In the drawings 5 designates the body or case of the lock, this body being of a general annular shape. Shackle 6 enters into the case 5, long arm 7 projecting inside the case and short arm 9 entering an aperture 8 and being held from movement thereby. Then the shackle is unlocked it may be lifted or drawn outwardly sufciently to allow the short arm 9 to be lifted out of aperture S and. the shackle may then be swung around on arm 7 as an axis.

Inside the case long arm 7 passes through two lugs 10, these lugs being spaced apart and forming guides for bolt 11, which is placed between them. Bolt 11 has an edge beveled on its lower face as at 12, which enters a similarly shaped notch 13 on the side of the shackle, the beveled edge of the notch forming a bolt-engaging surface on the lower side so that an outward pull on the shackle will force the bolt to the right in Fig. 2 and out of engagement with the shackle. A spring 14E or any equivalent device keeps the bolt 11 in place against the shackle, a pin 15 preventing the withdrawal of the shackle to an unnecessary extent.

Mounted in grooves 16 in case 5 are front and rear plates 17 and 18 and intermediate plate 19. Plate 18 is merely intended to vcover up the portions of the mechanism which would be otherwise exposed, but may be dispensed with if desired. Plates 17 and 19 are both provided with central apertures for carrying the rotating mechanism of the lock. This comprises a shaft 20 which directly carries a locking disk 21, the disk being mounted on the shaft tightly enough to ordinarily prevent its movement thereon but so that its position maybe rotatively shifted if it is desired to change the combination of the lock. A sleeve 22 spaces disk 21 from front plate 17, and a sleeve 23 spaces it from a ferrule 24 which is rigidly mounted in sleeve 26 in turn mounted rigidly in the central aperture of plate 19. On ferrule ,24 is. mounted the second locking disk 25,

this disk being spaced from the plate 19 by means of the sleeve 26. This construction may be varied, the main feature being to mount one of the disks on la sleeve which does not turn with the shaft. In case a larger number of disks are placed in the lock, these sleeves become in form more similar to washers. By this means it will be seen that disk 21 has no direct frictional action on disk 25, insuring that disk 25 will remain in any position where it is placed. Spring 27 bears against both disks 2l and Q5 and prevents either from being accidentally displaced.

Shaft i0 is journaled inside of ferrule 24e and is upset on one end as at 30 to hold it against longitudinal movement. On the other end it carries a knurled thumb nut 31 by means of which it may be turned. On the back of the thumb nut is mounted a circular plate provided with numbered divisions as shown by means of which the movements of the nut and the shaft may be accurately gaged.

Projecting lugs on the faces of thc disks Q1 and 25 provide means for the rotation of disk 25 from disk-2l. Then it is desired to open the lock, thumb nut 3l is turned in either direction to the number on plate to which it is known that the plate must be turned in order to register notch 85 in disk with bolt 1l. rfhe thumb nut is then turned in the opposite direction to the point where notch in disk 2l is also in register with bolt ll. By then pulling outf'ardly on the shackle the lock may be opened. llt will be seen that spring 14 will keep bolt ll normally out of direct contact with the edges of disks 2l and 25, the boltonly passing into the notches in the disks when the shackle is pulled outwardly. By, this means it is provided that the notches in the disk cannot be found by the rubbing of the bolt over them. Another feature is the making of the secondary disk 25 of lesser diameter than primary disk 2l. This provides that the bolt cannot possibly come into contact with the notch in the secondary disk until the notch in the primary disk, which is the larger, is registered, and this cannot be the case while the secondary disk is being turned, lugs 33 being so placed that the two notches are not opposite each other. Another feature of the lock is embodied in the beveling of the sides of the notch 86 in the primary disk, as at 3T. By this means it is provided that bolt ll will be forced outwardly, or toward the left in Fig. 2, when thumb nut 3l is rotated, thus immediately locking` the shackle in place.

Having described my invention, I claim l. ln a lock of the character described, a longitudinal-ly movable shackle having a V- shaped notch therein, a bolt engaging the notch and constructed to be forced out of engagement therewith by a longitudinal movement of the shackle, and a locking disk having a notch with beveled edges in its periphery adapted for registration with the bolt.

2. ln a lock of the character described, a longitudinally movable shackle having a V- shaped notch therein, a bolt engaging the notch and constructed to be forced out of engagement therewith by a longitudinal movement of the shackle, means to keep the bolt in engagement with the shackle, and a locking disk having a notch with beveled edges in its periphery adapted for registration with the bolt.

3. ln a lock of the character described, a longitudinally moving shackle having a transversely extending notch therein one wall of the notch being oblique to the line of movement of the shackle, a bolt adapted to enter the notch in the shackle and to be removed therefrom by a movement of the shackle, resilient means to hold the bolt in engagement with the shackle, and a locking disk pcripherally engaging with the bolt te prevent its movement out of the notch in the shackle the disk being provided with a notch with beveled edges in its periphery into which the bolt is adapted t-o enter.

il. In a lock of the character described, a case, a` shackle adapted to move longitudinally in the case, a bolt engaging surface on the shackle, a bolt adapted to move transversely to the line of movement of the shackle and to engage with the bolt engaging surface, resilient means to hold the bolt in engagement with the shackle, and a locking disk adapted to peripherally engage with the bolt and having' a notch with beveled edges into which the bolt is adapted to enter, the bolt engaging surface on the shackle being' oblique to the line of movement thereof so that the bolt is forced away from the shackle and into the notch in the disk upon the longitudinal movement of the shackle.

5. In a lock of the character described, a longitudinally movable shackle having a V- shaped notch therein, a bolt engaging the notch and constructed to be forced out of engagement therewith by the longitudinal movement of the shackle, a pair of locking disks having` notches in their peripheries adapted for registration with the bolt, and means to force the bolt toward the shackle.

6. In a lock of the character described, an annular case, a back for the case, a sleeve mounted centrally on the back and projecting within the case, a front plate Jfor the case, a shaft revolubly'mounted in the sleeve and front plate, a notched locking disk revolubly mounted on the sleeve, a second notched locking disk rigidly mounted on the shaft, connecting means between the two disks whereby the first named is revolved through the agency of the second named, a In Witness that I claim the foregoing I longitudinally movable shackle mounted in have hereunto subscribed my name this 14th 10 the caille anbd having a V-shaped notch Cthere day of January 1910. in, an a olt en a infr the notch an con- 5 strnoted to be fredbout of engagement FRED E' BENNETT therewith by the longitudinal movement of Witnesses: the shackle, the bolt adapted to enter the JAMES T. BARKELEW, notches in the disks. ELWooD H. BARKELEW. 

